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ALONZO 1)*.MILLARDQON CANTON, onto.

` LettcrsPa-tcnt No. 107 ,281, dated 'September 13,1870.

The Schedule referred to ia'these Letters Patent and making pag: of the sama I, ALONZO D. MILLARD, of Canton, inthe county of Stark, in the State ot Ohio, have invented certain improvements in ASash-Holders and Sash-Locks, ot which the following is a specification.

Nature and Objects of the ,-Tn'vention.v

My invention relates to theconstruetion and operation of a toothed cam, with a coiled spring seated in a' depression on its face, and a sliding toothed bar, in combination, inside of such case, in such a inanner that a sash maybe moved up and down freely,- or be fastenedat any point at' will, with but a slight force `exerted by any one on theinside of the room or upon both sashes."

' 1t is expedientto have the lockingbolt in the device, because, when a sash is to be. held in a particular position?. for a considerable 'length of time, for instance, fora whole day or'night, it will hold the same without yielding in. the slightest degree, as the` lcam might do by sinking into and bruising the wood ot' the frame, and, perhaps', rubbing oi the paint or yvarnish .in ay/'short time ot' use, and, moreover, when the- Vsash has been sustained by't-he .iinpingement 'ot' the eamagainst the wood of the frame, for any considerable length ottime, the cam is apt to become so bound and indented in-thc wood that it will not turn bach:` with facility, but the simple bolt is free from suoli objectionable action.

Description. of Accompanying Drawing. Figure lis an elevation of a section of a frameand sash, 'with my improvements in position for use Figure 2 is an elevation of the edge of a sash, showing the edge of the ease, and how it is inserted inthe sash itself;

Figure 3 isa-n elevation ot' the maincase without its cover Figure 4 is a like view of the cover, turned over so -as to display the under side ot' it; Figure 5 shows side and end views of the locking- .boltand l F igurc 6 shows similar views ot' the sliding toothed bar.

Figure 7 -is a perspective view ot' the `cam.

General Description..

In fig. 1 the strip C has been out away to show the .back edgeofthe cam H andtheV locking-bolt I, inserted in the frame B and the axle G, ot' the cam;

but, when my device is in position ina window, all Athat is visible from the front is 'the cover D, with its.

slot E, and the stein which connects the bolt I with.v

the knob F moves freely back and forth in the slot J. In g. 2 the inner edge of the sash is shown, and the outer edge of the case L, which has been driven into the inortise in the sash until no portion ot' Vit is visible, except the outer edge.

The flanges a a, before mentioned, are secn,as well as thc edge of the cover D, which is flush with the inner surface of the sash. The cam shows through at H, and theendof the bolt I also appears'in the circular recess provided for it between the main case and its cover.

These two parts la'st named may well he castof iron, orother suitable metal'. g

In fig. 3 are shown 1 the vsliding toothed-Jar S,

withthe knob F, the can1.=H, with its -teeth M, and depression l?, the axle G of the cam, the coiled spring R, one end of .which is attached to the axle G, and the other to the' post O.

A depression isinade uponthe face of the cam, in order to 4furnish space for seating and operating the spring R, the -force of which isconstantly exerted to drive the cam out against the frame B, and thns'support the sash at any point where any power raising it may be withdrawn.

The earn is cut away at- P, as shown in fig. 3, so

that it may pass freely under' the conntersink Q, in

the cover D, andthe locking-bolt I has a spring,' .l, arranged in the said countersink, as shown in fic. 4, so'that its end presses on the dat end of' that bolt, which is thus prevented from rattling or accidentally sliding forward. I t is obvious, from the' drawing and the foregoing .(lesciiption, that,'by applying force by the finger to the knob F, to raise thel sliding-.toothed bar S, it will, by means ot' its teeth, 'which meshy with thoseot` the cam, turn the latter away from the frame B, so that the sash, it up, will slide down byits own weight, or, if'vdown, it may be raised by a force merely suiiicient to overcome its force of gravity; or,

it' the sash be up, and it be desired to fasten it up,

this maybe done by raising the bar S, and thus forcing-the cam against the window-frame; and that, it' it be desired to lockthe sash at any point, so that it may not be forced either -up or down, then the bolt I may, by its knob K, be made' to slide into any one ofthe recesses provided fojr it inthe frame BL What I claim as my invention is The-combination of the sliding toothed bar S, provided with the knob F, working in the slot E,i n the case-cover D, and the toothed'cam H, turning on the axle G, and provided with the coiled springR, seated in a depression in its face, the several parti being constructed', and all arranged Aand combined substantially as and for the purpose c iescribed.

l A. D. MILLARD. Witnesses JOB AJsBo'i, D. HAMMOND. 

